# Ninja Tables <= 5.5.0 - Authenticated (Administrator+) PHP Object Injection via Imported Row Settings

- **ID:** WPSEC-2026-2984
- **Plugin:** Ninja Tables – Responsive Table Builder for Data, Pricing & Product Tables (`ninja-tables`), https://wordpress.org/plugins/ninja-tables/
- **Affected versions:** all versions before 5.5.1
- **Fixed in:** 5.5.1 (Update to 5.5.1 or later.)
- **Severity:** Medium 6.6 (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H)
- **Weakness:** CWE-502
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-11-12)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/ninja-tables
- **Fix released:** 2026-11-11
- **Published:** 2026-11-12
- **URL:** https://wpsec.com/vuln/WPSEC-2026-2984/

## Description

The Ninja Tables plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 5.5.0 via row settings restored from an imported Ninja Tables JSON file, which were stored verbatim and later read with maybe_unserialize() when the table is rendered. This makes it possible for authenticated attackers with administrator-level access, such as site administrators on a multisite network, to inject a PHP object. No known POP chain is present in the vulnerable software. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.

## References

- https://wpsec.com/vuln/WPSEC-2026-2984/
- https://plugins.svn.wordpress.org/ninja-tables/tags/5.5.1/
- https://wordpress.org/plugins/ninja-tables/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-2984/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.